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Earnings Per Common Share (Tables)
 9 Months Ended
Sep. 30, 2018
Earnings Per Share [Abstract]  
Summary Of Computation Of Basic And Diluted Earnings Per Common Share
The following table sets forth the computation of basic and diluted earnings per common share for the three and nine months ended September 30, 2018 and 2017.
 
 
 
Three Months Ended
September 30,
 
Nine Months Ended
September 30,
(In thousands, except share and per common share data)
 
2018
 
2017
 
2018
 
2017
Numerator:
 
 

 
 

 
 
 
 
Net income
 
$
24,762

 
$
22,112

 
$
84,126

 
$
61,411

Denominator:
 
 

 
 

 
 
 
 
Weighted-average common shares outstanding
 
15,686,542

 
15,287,974

 
15,420,135

 
15,299,039

Effect of dilutive restricted stock units
 
146,192

 
63,616

 
140,531

 
95,160

Weighted-average common shares outstanding adjusted for the effect of dilutive restricted stock units
 
15,832,734

 
15,351,590

 
15,560,666

 
15,394,199

Earnings per common share:
 
 

 
 

 
 

 
 

Basic earnings per common share
 
$
1.58

 
$
1.45

 
$
5.46

 
$
4.01

Diluted earnings per common share
 
$
1.56

 
$
1.44

 
$
5.41

 
$
3.99